North Korean leader Kim Jong-un speaks during a plenary meeting of the Central Committee of the Workers' Party of Korea in Pyongyang March 31, 2013 in this picture released by the North's official ... more 

North Korean leader Kim Jong-un speaks during a plenary meeting of the Central Committee of the Workers' Party of Korea in Pyongyang March 31, 2013 in this picture released by the North's official KCNA news agency on April 1, 2013. REUTERS/KCNA less